1) as someone who has been on the ground as well, I’ve lost a few offers because I was worried about over paying. On multiple occasions, after seeing what it sold for we thought “damn, we woulda paid another $25K on top to get it had we known.”
2) Canadian banks has a very conservative “stress test” for securing mortgages. This includes qualifying at much higher rates then is being offered. Therefore it isn’t possible to “stretch yourself beyond any reasonable limits”